Pick a particular COE of glass to use in your fusing projects and stick with that COE.

Everyone has their own opinion on what glass is best.

You can’t mix different brands of glass, so if you do purchase other COE’s keep the different types separate in your studio.

Be sure to mark the glass with the COE so that you don't accidentally mix the pieces.

Here is a list of the different glass types and a brief description of each type:

Float glass
– This glass can vary a lot. When purchasing either purchase an abundance of the same glass so that the compatibility is the same for your projects, or don’t mix your glass. This is a great beginner glass, because it is easily found and is inexpensive to purchase.

90 COE
– This glass is commonly made by Bullseye and has a COE of 90. If purchased from Bullseye, it has been tested compatible and can be mixed with other Bullseye glass. To find a local deal who sells Bullseye glass, check out their
dealer web site.

96 COE
– Commonly made by Spectrum and called Spectrum System 96. It is a thinner glass and is also tested compatible.

Dichroic
– This glass has a
magic
of its own. For a complete definition of this glass, please check
here
. It comes in a variety of COE’s and can be used with your other glass with the same COE. It can be
fired
much the same as your other glass. For further information on firing dichroic glass, please click
here.

Iridescent
- This glass also comes in a variety of COE’s and can be used along with your other similar COE glass. It has a surface treatment that gives it a rainbow like appearance.

Bottle glass
– You can
slump bottles
or break them up to use in your fusing projects. It has not been tested for compatibility, so don’t mix your glass or bottles.

Stained glass (Art Glass)
- This glass is not compatible. It can however be used in glass fusing. You can test different colors for compatibility, but there is a high possibility that you won’t be able to use different colors to fuse together. You can slump this glass into molds, or use it for draping purposes.

Most of the above listed fusing glass comes in a variety of sizes and of course colors.